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公开(公告)号：US12119892B2
公开(公告)日：2024-10-15
申请号：US17752371
申请日：2022-05-24
申请人： NXP B.V.
发明人： Markus Wobak
摘要： There is described a method of determining an initial transmission phase offset in an NFC device configured to operate in NFC card mode only, wherein the NFC device comprises an NFC chip and a matching circuit. The method comprises: determining an initial RF matching resonance frequency of the NFC device utilizing an internal oscillator of the NFC chip; reading correction data from a non-volatile memory of the NFC chip, the correction data being indicative of a frequency offset of the internal oscillator relative to a nominal oscillator frequency; determining a corrected RF matching resonance frequency of the NFC device based on the initial RF matching resonance frequency and the correction data; and determining the initial transmission phase offset based on the corrected RF matching resonance frequency. Furthermore, a device and a method of manufacturing an NFC device are described.
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公开(公告)号：US12074650B2
公开(公告)日：2024-08-27
申请号：US17854426
申请日：2022-06-30
发明人： Benny Vejlgaard , Alessio Marcone
IPC分类号： H04B17/13 , H04B7/06 , H04B17/12 , H04B17/318
CPC分类号： H04B17/13 , H04B7/0617 , H04B17/12 , H04B17/318
摘要： Interference management in calibration of a pre-distorter for a power amplifier of a user device. The method includes measuring strength of signals received via beams of one or more antenna arrays of a user equipment; ordering the beams on the basis of the measurement strengths; selecting from the ordered beams at least one beam for calibration of a pre-distorter for a power amplifier of the user equipment; obtaining information of available measurement resources for the calibration; transmitting a calibration signal using the selected beam at the time of the available measurement resources; receiving the calibration signal by another radio frequency chain of the antenna array which is not used in the transmission of the calibration signal; obtaining calibration information on the basis of the transmitted calibration signal and the received calibration signal; and calibrating the pre-distorter based on the calibration information.
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公开(公告)号：US20240275502A1
公开(公告)日：2024-08-15
申请号：US18438130
申请日：2024-02-09
CPC分类号： H04B17/12 , H04B17/221
摘要： A system for calibrating multi-port radio devices may include a radio device and circuitry. In one example, the radio device may include a reference port and a plurality of ports characterized by one or more radio-frequency (RF) imbalances relative to one another. Additionally or alternatively, the circuitry may be configured to calibrate the radio device by compensating for the one or more RF imbalances based at least in part on the reference port. Various other apparatuses, systems, and methods are also disclosed.
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公开(公告)号：US12057892B2
公开(公告)日：2024-08-06
申请号：US17419591
申请日：2020-02-14
申请人： Apple Inc.
发明人： Andrey Chervyakov , Dmitry Belov , Aida Vera Lopez , Alexei Davydov , Jie Cui
CPC分类号： H04B17/29 , H04B17/12 , H04L5/0048 , H04W24/06
摘要： An approach is described to for new radio (NR) antenna test function (ATF) measurements by a user equipment (UE). The approach includes measuring a first average phase of receive signals on resource elements that carry secondary synchronization signals (SS) received by a reference individual receiver branch. The approach also includes measuring a second average phase of the receive signals on the resource elements that carry secondary synchronization signals received by one other individual receiver branch different from the reference individual receiver branch. The approach further includes determining a difference between the first average phase and the second average phase. An indication of the difference is reported to test equipment.
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公开(公告)号：US12052050B2
公开(公告)日：2024-07-30
申请号：US18176334
申请日：2023-02-28
CPC分类号： H04B1/525 , H01Q1/523 , H04B1/44 , H04B1/48 , H04B7/0413 , H04B17/12 , H04L5/1461
摘要： In an embodiment, a remote antenna unit includes a transmitter, a receiver, an antenna, a first interference circuit, and a second interference circuit. The transmitter is configured to generate a transmit signal, and the receiver configured to process a receive signal. The antenna is coupled to the transmitter and the receiver and is configured to radiate a downlink signal in response to the transmit signal and generate the receive signal in response to an uplink signal. The first interference circuit is coupled to the transmitter and the receiver and is configured to receive an analog signal from the transmitter. The second interference circuit coupled to the transmitter and the receiver. The first interference circuit and the second interference circuit are configured to reduce, in the receive signal, interference caused by the transmit signal and/or at least one downlink signal radiated by an antenna.
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公开(公告)号：US12028120B2
公开(公告)日：2024-07-02
申请号：US18346725
申请日：2023-07-03
申请人： Gugli Corporation
摘要： Antenna monitoring systems and methods can include, among other things, a transmitter near each of the antennas in a distributed antenna system (DAS). The transmitter can transmit an antenna identifier corresponding to that antenna, so that the various transmitters in the DAS each transmit different antenna identifiers. These antenna identifiers can be detected by a receiver and can be processed to determine whether any antenna identifiers are missing. If any expected antenna identifier is missing, the receiver can infer that the antenna or a component associated with the antenna (such as cabling) may have failed. The receiver can then output an indication or notification that may be accessed by maintenance personnel and/or emergency personnel to enable them to identify and repair the non-functioning antenna or component. The transmitter can transmit other data, such as environmental data, RF data, or the like, to facilitate additional or alternative monitoring functionality.
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公开(公告)号：US12013424B2
公开(公告)日：2024-06-18
申请号：US17252687
申请日：2019-06-12
申请人： XILINX, INC.
发明人： Michael Grieger
CPC分类号： G01R29/0892 , G01R29/10
摘要： An antenna test system for testing an antenna with a plurality of antenna elements is disclosed. The antenna test system includes an antenna element connector for every antenna element of the antenna, wherein the antenna element connectors are wiredly couplable to the respective antenna elements, a channel emulator comprising an antenna port for every antenna element connector and a number of test signal ports, and a signal evaluation device for every one of the test signal ports that is coupled to the respective test signal port and that in each case is configured to receive a downstream test signal from the channel emulator and to evaluate the received downstream test signal and/or to provide an upstream test signal to the channel emulator via the test signal port, wherein the channel emulator is configured to receive downstream signals emitted by the antenna elements at the antenna ports and to perform a channel emulation on the received downstream signals and to output on each test signal port a single respective downstream test signal, and/or wherein the channel emulator is configured to receive upstream test signals from the respective signal evaluation devices via the test signal ports and to perform a channel emulation on the received upstream test signals and to output on each antenna port a respective upstream signal.
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公开(公告)号：US11946981B2
公开(公告)日：2024-04-02
申请号：US17702949
申请日：2022-03-24
发明人： Jian Hu , Jinjun Yu , Hu Zhao , Yongding Zhang
摘要： A cable sequence detection method and a detection system. A base station antenna includes N ports, an RRU includes M antenna ports and one calibration port, any port i of the base station antenna corresponds to a directional coupling branch Ti, and a switch circuit Ki whose connection and disconnection are controlled by an RCU is disposed on the Ti. The method includes: the RRU sends a detection signal to the base station antenna through antenna port j; the RCU controls the switch circuit Ki to be disconnected and another switch circuit to be connected; the RRU detects whether energy Qi obtained by the Ti is greater than a threshold; and the RRU determines whether the antenna port j of the RRU is connected to the port i of the base station antenna according to whether Qi is greater than the threshold.
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公开(公告)号：US11910261B2
公开(公告)日：2024-02-20
申请号：US17395806
申请日：2021-08-06
发明人： Marlon Peter Persaud , Andrew Logothetis , Krzysztof Dudzinski , Venkateswarlu Katepalli , Ashvtosh Goel
IPC分类号： H04W28/02 , H04W36/30 , H04L5/00 , H04W24/08 , H04B17/309 , H04B17/10 , H04B17/12 , H04B17/18 , H04L41/0803 , H04W16/10 , H04W72/0453 , H04B7/185 , H04W24/02 , H04W24/10 , H04W76/10 , H04W72/23 , H04W72/541 , H04W72/542
CPC分类号： H04W36/30 , H04B17/309 , H04L5/001 , H04W24/08 , H04B7/18504 , H04B17/101 , H04B17/12 , H04B17/18 , H04L41/0803 , H04W16/10 , H04W24/02 , H04W24/10 , H04W72/0453 , H04W72/23 , H04W72/541 , H04W72/542 , H04W76/10
摘要： A cellular communication apparatus includes antenna circuitry. A transceiver receives or transmits a signal using the antenna circuitry on a chosen channel of a portion of a radio spectrum. The portion of the radio spectrum is divided into one or more channels including the chosen channel each occupying a bandwidth of the portion of the radio spectrum. Control circuitry dynamically changes a configuration of the one or more channels of the radio spectrum and communication circuitry communicates the configuration of the one or more channels of the radio spectrum to one or more items of user equipment.
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公开(公告)号：US11894881B2
公开(公告)日：2024-02-06
申请号：US17432311
申请日：2019-02-20
CPC分类号： H04B17/318 , H04B17/12 , H04L41/16 , H04W24/02
摘要： It is provided a method for adjusting alignment for microwave transmissions from a microwave transmitter to a microwave receiver based on a reinforcement learning, RL, model. The method comprises the steps of: obtaining state space comprising external state space and internal state space, the external state space comprising at least one value of a parameter related to environmental conditions, and the internal state space relates to alignment of the microwave transmitter; determining an action in an action space, the action space comprising actions to adjust alignment of the microwave transmitter; obtaining a measurement of path loss for a transmission from the microwave transmitter to the microwave receiver; determining a reward value based on the path loss, wherein an increase in path loss results in a reduced reward value; and adjusting the RL model based on the obtained state space, the determined action and the determined reward value.
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